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appendix b final 2008 biological surveys of los angeles and long ...

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6.0 Riprap Biota<br />

Table 6.3-5. Mean Abundance <strong>of</strong> Dominant Riprap Biota in Scraped Quadrats by Tidal Zones in<br />

Los Angeles <strong>and</strong> Long Beach Harbors, January <strong>and</strong> July <strong>2008</strong>.<br />

Mean<br />

Abundance<br />

Percent<br />

Abundance<br />

LARR<br />

1<br />

Species<br />

Upper Intertidal<br />

Chthamalus fissus 58 43 51.3 36.8 0.0 72.0 205.5 109.0 62.8 0.0<br />

Balanus gl<strong>and</strong>ula 25 19 13.5 44.3 43.5 1.5 0.0 36.0 44.0 6.3<br />

Balanus crenatus 5 4 20.3 10.0 0.0 0.5 1.5 6.3 0.0 0.0<br />

Tetraclita<br />

4 3 10.5 0.0 0.0 20.5 0.0 0.0 1.3 0.0<br />

rubescens<br />

Collisella scabra 4 3 4.8 4.8 0.0 14.3 3.0 3.8 2.8 0.0<br />

Lasaea adansoni 4 3 1.3 5.8 0.0 0.5 0.0 5.0 18.3 0.0<br />

Lower Intertidal<br />

Photis spp. 1 28 12 189.3 0.0 0.0 8.0 12.8 0.0 0.8 2.5<br />

Caprella simia 21 9 9.8 5.3 54.3 24.0 55.5 12.8 2.8 3.3<br />

Amphipholis<br />

20 8 6.3 0.0 58.3 0.5 9.5 35.0 32.5 5.0<br />

squamata<br />

Phoronida 14 6 102.0 0.0 0.0 0.0 1.8 0.0 0.0 0.0<br />

Gammaropsis<br />

12 5 71.3 0.0 0.0 0.5 14.8 2.3 1.3 0.5<br />

thompsoni<br />

Ericthonius<br />

11 4 71.0 0.0 0.0 0.5 6.0 2.5 0.0 0.3<br />

brasiliensis<br />

Caprella californica 8 3 14.8 0.3 0.0 24.0 26.0 3.0 0.0 5.0<br />

Zeuxo normani 6 2 2.5 5.0 19.3 5.0 6.8 5.3 1.5 1.0<br />

Caprella spp. 6 2 4.8 0.0 5.5 27.0 12.5 3.8 0.0 3.0<br />

Pseudopotamilla<br />

6 2 15.0 0.0 0.8 1.5 14.3 2.0 7.8 0.8<br />

socialis<br />

Ascidia spp. 5 2 7.8 0.0 14.5 0.0 4.0 5.5 0.0 4.5<br />

Spirorbidae 4 2 0.0 12.0 0.0 0.0 0.0 0.0 0.5 18.5<br />

Monocorophium<br />

4 2 17.3 1.5 3.5 10.0 0.8 1.0 0.0 0.3<br />

acherusicum<br />

Subtidal<br />

Caprella simia 21.6 12.0 21.5 55.3 9.0 31.0 26.3 13.3 3.8 12.8<br />

Amphipholis<br />

19.8 11.0 0.0 4.0 58.5 0.5 1.5 29.5 34.3 20.5<br />

squamata<br />

Photis spp. 1 11.7 6.5 118.0 0.0 0.0 4.5 23.3 0.0 0.5 0.5<br />

Caprella californica 7.3 4.0 22.5 0.0 0.0 0.0 37.5 2.3 0.3 3.3<br />

Caprella spp. 5.8 3.2 8.0 4.3 2.5 9.3 15.0 3.3 0.8 4.3<br />

Gammaropsis<br />

5.4 3.0 33.5 0.0 0.0 3.5 19.8 0.0 0.8 0.0<br />

thompsoni<br />

Crepipatella<br />

4.8 2.7 21.0 0.0 1.5 0.0 14.8 1.3 6.8 1.0<br />

dorsata<br />

Exogone lourei 4.5 2.5 22.0 2.5 2.8 5.0 3.0 1.8 4.5 3.0<br />

Ascidia spp. 4.1 2.3 8.0 1.0 0.8 2.8 2.5 1.8 6.3 12.0<br />

Mytilus<br />

galloprovincialis<br />

3.5 2.0 0.0 0.3 17.0 1.0 0.3 1.5 5.0 1.5<br />

LARR<br />

2<br />

LARR<br />

3<br />

LARR<br />

4<br />

LBRR<br />

1<br />

LBRR<br />

2<br />

LBRR<br />

3<br />

6–16 <strong>2008</strong> Biological Surveys <strong>of</strong> Los Angeles <strong>and</strong> Long Beach Harbors<br />

April 2010<br />

LBRR<br />

4

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